CHINESE JOURNAL OF PRACTICAL MEDICINE, Volume 38, Issue 11,2011, Pages 87-88, doi:10.3760/cma.j.issn.1674-4756.2011.11.043
CHINESE JOURNAL OF CLINICIANS(ELECTRONIC EDITION), Volume 05, Issue 11,2011, Pages 3151-3154, doi:10.3877/cma.j.issn.1674-0785.2011.11.008